JPH08312247A - Sliding door opening / closing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To configure a slide door opening / closing device in a vehicle compactly, suppress an increase in step height for boarding / alighting, and reduce the cost of the slide door opening / closing device. A slide door guide rail 11 is disposed below a vehicle entry / exit step 21, a toothed belt 14 extending along the guide rail 11 is hung on a toothed pulley 13a, and is connected to a slide door. 13a
Engage the output pulley 40 with a meshing joint 41,
Both are pivotally supported by through bolts 33, and step 2 for getting on and off
Drive device B mounted on the upper surface of the toothed belt 4
The output pulley 40 is rotatably driven via the motor 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing a door by sliding the door in the front-rear direction of the vehicle along the side surface of the vehicle.

[0002]

2. Description of the Related Art A conventional slide door opening / closing device for a vehicle is, as disclosed in Japanese Patent Application Laid-Open No. 4-62284, located inside the vehicle rather than a guide rail for guiding the slide door along the side surface of the vehicle. , A bracket fixed to the lower surface of the vehicle floor and fixed at one end to the roller support bracket traverses below the guide rail, and the other end protruding into the case is fastened to the belt. The slide door connected to the bracket is opened and closed by the reciprocating drive of the.

However, in this case, since the entire slide door opening / closing device is installed outside the vehicle compartment, which is the vehicle floor lower surface inside the vehicle than the guide rails, a special case for enclosing them is indispensable. Since the bracket that is locked by the belt and that drives the slide door to open and close crosses under the guide rail, in order to keep the ground height of the underside of the vehicle constant, only the step for getting on and off is placed above the guide rail. There is a problem that it is necessary to increase the height, which impairs the ability to get on and off the vehicle.

Further, in order to suppress the looseness and slack generated in the belt when the belt transmits the driving force, it is necessary to attach some tension rollers and the like, resulting in a complicated structure and an increase in manufacturing cost. , The relative distance between the slide door and its opening / closing device increases in the vehicle width direction,
It is relatively difficult to maintain high mounting accuracy, and even if the above case is installed, there is a risk of damage from the road surface side, and it is actually difficult to waterproof and dust-proof the case. There was a drawback.

Further, in the slide door structure for a vehicle disclosed in Japanese Patent Laid-Open No. 3-248914, an opening / closing drive device for opening and closing the slide door, that is, a drive motor, an actuator, a slide member, a spiral shaft, etc., is provided. The member is installed between the side sill and the step portion, but in this case, the vertical distance between the side sill, in which the drive mechanism such as the drive motor, the actuator, and the slide member is housed, and the step portion is increased. Therefore, in order to keep the ground height of the lower surface of the vehicle constant, the stepped portion located above the side sill becomes higher by that amount, which impairs the ability to get on and off the vehicle, and the spiral shaft Undesirably increased vehicle weight and increased cost due to its relatively large weight and high price The it has.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a slide door opening / closing device for a vehicle is constructed compactly, the rise of the step height for getting on / off is suppressed, and the cost of the slide door opening / closing device can be reduced. It is what

[0007]

Therefore, a slide door opening / closing device according to the present invention is a drive device for opening / closing a slide door in a vehicle and a drive force for transmitting the drive force of the drive device to the slide door. Has a transmission device,
It is desirable that the drive device is arranged on the upper surface of the boarding / alighting step, the driving force transmission device is arranged below the boarding / alighting step, and the drive device has a built-in clutch. It is preferable that the driving force transmission device includes a pair of pulleys and a winding transmission means that is wound around the pulleys.

[0008]

That is, the drive device is arranged on the upper surface of the boarding / alighting step, and the driving force transmission device is arranged below the boarding / alighting step, so that the driving device and the driving force transmission device are separated above and below the boarding / alighting step. Has been installed,
By disposing the driving force transmission device in a relatively narrow space below the boarding / alighting step, it is possible to easily prevent the height of the boarding / alighting step from rising even if the power opening / closing device for the sliding door is provided. You can

[0009]

Embodiments of the present invention shown in the drawings will be specifically described below. An inwardly extending arm 2 is fixed to the inner lower portion of the slide door 1 with respect to the side surface of the van type vehicle, and a roller support bracket 4 and a mounting bracket 5 fixed to each other by a screw 3 are provided with a pin 6 at the tip of the arm 2. The two horizontal rollers 7 and one vertical roller 8 arranged in the front-rear direction of the vehicle are rotatably supported by the roller support bracket 4, while the side sill 9 is rotatably supported by the roller support bracket 4. A substantially U-shaped guide rail 11 extending in the front-rear direction of the vehicle, slightly bent inward in the front, and having a cross-section opening downward is mounted in the roller guide housing 10 formed in the horizontal roller 7 Is fitted into the guide rail 11 and rolls to guide the vehicle in the front-rear direction, and the vertical roller 8 supports the vertical load of the slide door 1. Flat rail 12
By rolling up, the slide door 1 moves in the front-rear direction substantially along the side surface of the vehicle to be opened and closed.

Further, toothed pulleys 13a and 13b are installed in front of and behind the guide rail 11, respectively, and are pivotally supported by substantially vertical shafts.
The toothed belt 14 hung on the guide rail 11 is
It is arranged with a small gap along the inner and outer sides of the
The inside of the bent portion of the guide rail 11 is guided by the guide roller 15 attached to the guide rail 11, and the outside of the bent portion of the guide rail 11 has the guide rail 1.
Directed by the outer lateral surface of 1.

Further, the base portion 17 of the interlocking bracket 16 is fixed to the upper surface of the mounting bracket 5, and the rising portion 18 of the interlocking bracket 16 and the holding member 19 are set screws 20.
The toothed belt 14 is fixed to the guide rail 11 by sandwiching the toothed belt 14 on the outer side of the guide rail 11, and both end portions of the toothed belt 14 are coupled to each other by the toothed pulleys 13a and 13b. , Toothed belt 1
4, the guide roller 15, the interlocking bracket 16 and the like constitute a driving force transmission device A.

On the other hand, the boarding / alighting step 21 disposed above the side sill 9 is formed of a step plate 22 and a protective cover 23 connected to each other, and the reversible electric motor 30, on the upper surface of the boarding / alighting step 21, A drive unit B in which the speed reducer 31 and the clutch unit 32 are integrated is attached.

Further, a single through bolt 33 that vertically penetrates the boarding / alighting step 21 is fixed to the upper surface of the rear end of the guide rail 11 by a bending bracket 34, and a cover 35 extending rearward from the drive unit B. The toothed output pulley 40 and the toothed pulley 13b as a drive pulley are rotatably supported by the through bolt 33 via a collar 36 and a radial bearing 37. The toothed output pulley 40 and the toothed pulley 13b are assembled so that the meshing joints 41 formed on the toothed output pulley 40 and the toothed pulley 13b are engaged with each other, and the toothed output belt 42 extending from the clutch portion 32 is toothed output. Pulley 4
It has been multiplied by zero.

Therefore, the electric motor 3 in the drive unit B
The rotational driving force that is rotated by 0 and is appropriately decelerated by the reduction gear 31 passes through the clutch portion 32 and is sequentially output with the toothed output belt 42, the toothed output pulley 40, the meshing joint 41,
When the toothed belt 14 is transmitted to the toothed pulley 13b and the toothed belt 14 in the driving force transmission device A and is reciprocally driven along the outer surface of the guide rail 11, the interlocking bracket 16, the mounting bracket 5, the roller support bracket Since the slide door 1 connected to the toothed belt 14 by the armature 4 and the arm 2 is urged in the front-rear direction along substantially the side surface of the vehicle, when the horizontal roller 7 is guided by the guide rail 11 in the front-rear direction of the vehicle and rolls. At the same time, vertical roller 8
Rolls on the rails 12 to open and close the slide door 1 at an appropriate speed, and if the clutch portion 32 of the drive unit B is disengaged, the slide door 1 can be freely opened and closed manually. Will be able to.

The horizontal roller 7 and the interlocking bracket 1
Since a constant distance is always maintained in the vehicle width direction between the rollers 6 via the roller support bracket 4 and the mounting bracket 5, when the horizontal roller 7 approaches the bent portion of the guide rail 11, the interlocking bracket 16 The portion of the toothed belt 14 that is fixed to the outer side surface of the guide rail 11 moves away from the outer side surface.

In the above device, the toothed pulley 13
Since a, 13b and the toothed belt 14 are arranged around the guide rail 11 and are housed in the roller guide housing 10 in a very compact manner, the installation of them makes the roller guide housing 10 particularly enlarged, or In addition to the roller guide housing 10, it is not necessary to add a space for accommodating the toothed pulleys 13a and 13b and the toothed belt 14 to the vehicle, and the interlocking bracket 16 that connects the toothed belt 14 to the slide door 1 is a roller guide. Since the interlocking bracket 16 itself is arranged in the housing 10 and fixed to the roller support bracket 4 via the mounting bracket 5, the interlocking bracket 16 itself can be made much smaller than the conventional one, and the drive having a relatively large volume is also possible. Device B is attached to the top of the boarding step 21 Because, without the need to increase especially the ingress-egress step 21, with the passenger of the vehicle can be maintained satisfactorily, attached cost of a sliding door opening and closing device can also be easily reduced.

Further, since the toothed belt 14 hung on the toothed pulleys 13a and 13b is arranged along the inner and outer outer surfaces of the guide rail 11, the inner and outer sides of the existing guide rail 11 will be described. Toothed belt 1 by means of a simple guide roller 15 on one side or on it
4 can be reliably guided, so that when the toothed belt 14 is driven by the drive device B, it is possible to easily suppress looseness or slack that is likely to occur in the toothed belt 14.

Further, as described above, the interlocking bracket 16
Is relatively small, it is not only easy to maintain the relative mounting accuracy of the toothed belt 14 and the sliding door 1 at a high level, but also the roller guide housing 10
The driving force transmission device A and the driving device B having different mounting reference planes from the inner surface and the upper surface of the stepping board 21 are
Toothed output pulley 40 and toothed pulley 1 in which a meshing joint 41 is pivotally supported by a through bolt 33 of a book and meshes with each other.
3b, and at this time, the centering of the toothed output pulley 40 and the toothed pulley 13b is caused by the pivotal support of the through bolt 33 and the meshing of the meshing joint 41.
Since the driving force is automatically and accurately transmitted, the driving force is always smoothly transmitted from the driving device B to the driving force transmission device A. As a result, the opening / closing operation of the slide door 1 by the driving device B and the driving force transmission device A is always performed. It has the advantage that it can be done smoothly.

Further, since the drive device B can be selectively installed at an arbitrary angular position around the through bolt 33, which is the support shaft of the toothed output pulley 40, the rear portion of the upper surface of the step-in / step-out step 21 can be selected. Since the drive device B can be easily installed by utilizing the dead space of 1., it is very convenient in practice.

Moreover, the driving force transmission device A is housed in the roller guide housing 10 and the driving device B is
Is attached to the upper surface of the passenger step inside the passenger compartment, and the interlocking mechanism such as the toothed output pulley 40 and the through bolt 33 between the drive device B and the driving force transmission device A is also inside the roller guide housing 10 and the passenger step. 21
Since it is placed across the upper surface, the sliding door 1
When the door is closed, the above-mentioned members are automatically shut off from the outside by the slide door 1 itself, so that the toothed pulleys 13a, 13b and the toothed belt 14 are contaminated by the muddy water splashed by the wheels while the vehicle is running. At the same time, the possibility of being damaged from the road surface side by the lower side sill 9 is reduced, and the functions of the driving force transmission device A, the driving device B, etc. can be easily maintained for a long period of time. Like

In the above embodiment, one end of the interlocking member that connects the slide door and the winding transmission means is fixed to the slide door via the roller support bracket. It may be configured so as to be directly fixed to the sliding door, and as the winding transmission means, it is also possible to adopt, besides the toothed belt, a resin-coated chain or the like that has little slippage with the pulley. Needless to say.

[0022]

In the sliding door opening / closing device according to the present invention, the drive device is arranged on the upper surface of the boarding / alighting step, and the driving force transmission device is arranged below the boarding / alighting step. By disposing the driving force transmission device in the relatively narrow space below the step, the height of the step for getting on and off can be set relatively low even if the power opening / closing device for the sliding door is provided. It is possible to favorably maintain the ease of getting on and off the vehicle and to easily reduce the cost required to attach the slide door opening / closing device.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the above embodiment.

3 is an enlarged cross-sectional view taken along the line III-III of FIG.

4 is an enlarged sectional view taken along the line IV-IV in FIG.

FIG. 5 is an enlarged view of a vertical cross section of a main part of the above embodiment.

FIG. 6 is an exploded perspective view of essential parts of the above embodiment.

[Explanation of symbols]

 1 Sliding Door 4 Roller Support Bracket 7 Horizontal Roller 8 Vertical Roller 9 Side Sill 11 Guide Rail 12 Rails 13a, 13b Toothed Pulley 14 Toothed Belt 16 Interlocking Bracket 21 Stepping on / off 30 Electric Motor 31 Speed Reducer 32 Clutch Part 33 Through Bolt 40 Toothed output pulley 41 Meshing joint 42 Toothed output belt A Drive force transmission device B Drive device

Claims (7)

[Claims] 1. A drive device for opening and closing a slide door of a vehicle, and a drive force transmission device for transmitting a drive force of the drive device to the slide door, the drive device being disposed on an upper surface of a boarding / alighting step. The sliding door opening / closing device in which the driving force transmission device is arranged below the step for getting on / off. 2. The slide door opening / closing device according to claim 1, wherein the driving force transmission device includes a pair of pulleys and a winding transmission means that is wound around the pulleys. 3. The slide door opening / closing device according to claim 2, wherein the winding transmission means is arranged along a guide rail of the slide door. 4. The slide door opening / closing device according to claim 2 or 3, wherein the pulleys are arranged in front of and behind the guide rail of the slide door. 5. The slide door opening / closing device according to claim 2, wherein the winding transmission means is a toothed belt. 6. The output pulley driven by the drive device and the drive pulley of the drive force transmission device according to any one of claims 1 to 5, wherein the output pulley is pivotally supported by a single shaft extending vertically. Slider opening and closing device that works together. 7. The slide opening / closing device according to claim 6, wherein the output pulley and the drive pulley are interlocked with each other by a meshing joint engaged in a rotating direction.